EP 3180368 B1 20181017 - PROCESS FOR PREPARING A POLYETHYLENE PRODUCT
Title (en)
PROCESS FOR PREPARING A POLYETHYLENE PRODUCT
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES POLYETHYLENPRODUKTS
Title (fr)
PROCÉDÉ POUR PRÉPARER UNE RÉSINE DE POLYÉTHYLÈNE
Publication
Application
Priority
- EP 15176886 A 20150715
- EP 2016066677 W 20160713
Abstract (en)
[origin: WO2017009386A1] The present invention relates to a process for preparing a polyethylene product having a multimodal molecular weight distribution, said process comprising the steps of: (a) feeding ethylene monomer, a diluent, at least one metallocene catalyst, optionally hydrogen, and optionally one or more olefin co-monomers into a first slurry loop reactor; and polymerizing the ethylene monomer, and the optionally one or more olefin co-monomers, in the presence of said at least one metallocene catalyst, and optionally hydrogen, in said first slurry loop reactor thereby producing a first polyethylene fraction; (b) feeding the first polyethylene fraction to a second slurry loop reactor serially connected to the first slurry loop reactor, and in the second slurry loop reactor polymerizing ethylene, and optionally one or more olefin co-monomers, in the presence of the first polyethylene fraction, and optionally hydrogen, thereby producing a second polyethylene fraction; and (c) feeding the second polyethylene fraction to a gas phase reactor serially connected to the second slurry loop reactor, and in the gas phase reactor polymerizing ethylene, and optionally one or more olefin co-monomers, in the presence of the second polyethylene fraction, and optionally hydrogen, thereby producing the polyethylene product, wherein at least 25 % by weight of the polyethylene product is prepared in the first slurry loop reactor.
IPC 8 full level
C08F 2/00 (2006.01); C08F 2/01 (2006.01); C08F 10/02 (2006.01); C08L 23/04 (2006.01)
CPC (source: EP KR US)
B01J 19/245 (2013.01 - US); B01J 19/2455 (2013.01 - US); C08F 2/001 (2013.01 - KR); C08F 2/01 (2013.01 - KR); C08F 2/14 (2013.01 - KR); C08F 210/02 (2013.01 - US); C08F 210/14 (2013.01 - KR); C08F 210/16 (2013.01 - EP KR); C08L 23/06 (2013.01 - EP KR); C08L 23/0815 (2013.01 - KR); C08F 2500/05 (2013.01 - KR US); C08F 2500/07 (2013.01 - KR); C08F 2500/12 (2013.01 - KR); C08F 2500/26 (2013.01 - KR)
C-Set (source: EP)
Citation (opposition)
Opponent : Borealis AG
- WO 2010054732 A1 20100520 - BOREALIS AG [AT], et al
- WO 2014016418 A1 20140130 - TOTAL RES & TECHNOLOGY FELUY [BE]
- WO 2012001160 A2 20120105 - TOTAL PETROCHEMICALS RES FELUY [BE], et al
- "Plastics - Determination of the melt mass-flow rate (MFR) and the melt volume-flow rate (MVR) of thermoplastics", DANSK STANDARD DS/EN ISO 1133, 2. UDGAVE, 17 June 2005 (2005-06-17), XP055638375
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2017009386 A1 20170119; AU 2016293039 A1 20180118; AU 2016293039 B2 20200430; BR 112018000715 A2 20180918; BR 112018000715 B1 20211221; CA 2990906 A1 20170119; CA 2990906 C 20220308; CN 107835822 A 20180323; CN 107835822 B 20200609; EA 039128 B1 20211208; EA 201800018 A1 20180430; EP 3180368 A1 20170621; EP 3180368 B1 20181017; EP 3180368 B2 20220727; JP 2018520241 A 20180726; JP 6946260 B2 20211006; KR 102573449 B1 20230831; KR 20180030525 A 20180323; MX 2018000390 A 20180314; MY 183120 A 20210215; PH 12018500073 A1 20180730; PH 12018500073 B1 20180730; TR 201819970 T4 20190121; US 10544245 B1 20200128
DOCDB simple family (application)
EP 2016066677 W 20160713; AU 2016293039 A 20160713; BR 112018000715 A 20160713; CA 2990906 A 20160713; CN 201680041202 A 20160713; EA 201800018 A 20160713; EP 16738778 A 20160713; JP 2018500291 A 20160713; KR 20187001124 A 20160713; MX 2018000390 A 20160713; MY PI2017704852 A 20160713; PH 12018500073 A 20180108; TR 201819970 T 20160713; US 201615741689 A 20160713